I have the following issue:
I am making a gas guage based on a percentage.
ie.
- a 180 degree arc is created
- the range will be 0 to n (undetermined ammount)
- there will be x number of entries
- the needle will
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-Original Message-
From: Michael Geier [mailto:[EMAIL PROTECTED]]
Sent: Friday, May 31, 2002 9:18 AM
To: Php-General
Subject: [PHP] gd project question
I have the following issue:
I am making a gas guage based on a percentage.
ie
: RE: [PHP] gd project question
Good day,
Wow, a high school math question.
You should use asin() and acos() of the angle to get the y and x
differentials, respectively. Multiply the result by the size of
the needle.
This assumes that your guage is oriented horizontally, and the
needle
On Fri, 31 May 2002, Michael Geier wrote:
my arc runs from 180 deg. to 360/0 degree, or left to right, pointing
upwards (upside down U).
i guess I am not getting my head around the numbers...is there anywhere on
the net that has a good thorough description about a process like this?
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